RST Decoder vs Russian HAM Radio Exam

This is an App that decodes Morse code input from the microphone. It is a Morse practice App that you can use to check if you are keying the correct code. Signals with good S/N can be decoded correctly, but signals with bad S/N cannot be decoded correctly. Also, the performance will be degraded for extremely slow or fast signals. Usually about 5 to 10 characters are required for speed synchronization of Morse Code. Adjust the input signal so that the peak value changes from level 6 to level 7. Make fine adjustments to each parameter according to the reception status. [Additional Functions] -In addition to the decoder using BPF, a new decoder using FFT has been added so that it can be switched according to the usage. -AFD (Auto Frequency Detector) function has been added to the decoder using BPF, and BPF can be set automatically by pressing the AFD button. -The decoder using FFT automatically follows the strongest signal in the band by AFD (Auto Frequency Detector) and AGC (Auto Gain Control). You can also hold the AFD / AGC parameters by pressing the Lock button. * There will be a time lag of about 1 to 2 seconds for AFD tracking. [Control parameters] 1. Audio Input Level 2.BPF ON/OFF 3.BPF of Center Frequency 4.BPF of Band Width 5.CW Speed Control ON/OFF 6.CW Speed Control Low, Mid1, Mid2 or High 7.Delete All Decoded Text 8.Realtime CW Signal Display 9.Input signal recording / playback function *Japanese/KANA text is not supported. [Note] Since the signal after BPF is output to the audio output, it can also be used as an AF-CW filter. [URL of this App working example video] https://youtu.be/Pwp7W4m-m34

Prepare for the Russian amateur radio qualification exam: all official SRR questions, training with hints and a practice exam that follows the rules of the real one. No ads, no subscriptions. Please note: the app and all exam questions are in Russian. Created by a ham radio operator for fellow hams. Get your license and the whole world opens up on the air: DX contacts, contests, expeditions and much more! TRAINING • All study questions for every category, from the 1st to the 4th • Go through all questions or pick a topic you want to improve • Don't know the answer? Get a hint. Made a mistake? See the correct answer right away • Mistakes training: practice only the questions you got wrong • Answer options are shuffled, so you learn the answer, not its position • Stopped halfway? Continue from the same question PRACTICE EXAM • Just like the real exam: the same number of questions from each of the 8 syllabus topics • Timer and pass mark • Results and a review of your mistakes after every attempt MORSE LISTENING • Practice receiving texts by ear or take a practice exam • Choose a text or a random one, and enter answers in Latin or Cyrillic • Adjust playback speed and pause during training • Enter groups with a dedicated keyboard and review mistakes after each run • Earn achievements and keep your study streak going STATISTICS • How many questions you've mastered in each category and topic • Your best result and attempt history • The topic with the most mistakes, one tap away from training it ALSO • Works offline • Progress is backed up to the cloud • A daily goal, streak and achievements help you study regularly • Zoom in on question figures and diagrams • No ads and no subscriptions. If the app helped you, you can support the project Questions are taken from the official website of the Russian Amateur Radio Union (SRR). This app is independent and is not an official SRR app. Colleagues, study, pass the exam and get your well-deserved license and callsign! 73! See you on the air, R1BIA